Biology Unit 2 Practice Test

Which of the following best describes an atom?

• protons and neutrons grouped together
• protons and electrons grouped together
• a core (center) of protons and neutrons surrounded by electrons
• a core of electrons and neutrons surrounded by protons

Tags

NGSS.MS-PS1-1

Which of the following is found farthest from the center of an atom?

• nucleus
• proton
• neutron
• electron

Use the picture of an atom below to answer the question.

Which statement best describes the part of the atom that is shown by the letter B?

• It is an electron, and it has a negative charge.
• It is an electron, and it has a positive charge.
• It is a proton, and it has a negative charge.
• It is a neutron, and it has a neutral charge.

Tags

NGSS.MS-PS1-1

What makes an atom have a positive charge?

• more electrons than protons
• more neutrons than electrons
• more protons than electrons
• less protons than electrons

What is the basic unit of matter (smallest part of an element)?

• atoms
• elements
• protons
• compounds

Tags

NGSS.5-PS1-1

The protons in an atom’s nucleus have what kind of charge?

• positive
• negative
• neutral
• no charge

A carbohydrate is a macromolecule that is used to...

• give cells/systems energy.

• build cell parts.

• give cells/systems long term energy storage.

• help cells with chemical processes.

Tags

NGSS.MS-LS1-7

A protein is a macromolecule that is used to...

• give cells/systems energy.

• build cell parts.

• give cells/systems long term energy storage.

• help cells with chemical processes.

Tags

NGSS.MS-LS1-7

NGSS.MS-LS1-2

When reading the nutrition facts on food packaging total fats is a measure of...

• Carbohydrate

• Lipids

• Water

• Protein

When reading the ingredients on a nutrition facts label carbohydrates are written as a type of

• food additive

• enzyme

• sugar

• protein

Tags

NGSS.MS-LS1-7